Water Quality in San Jose, CA (93926)
EPA violation data for public water systems serving ZIP code 93926.
Active Health Violations
16 health-based violations found in the past 5 years, with at least one still unresolved. Contaminant levels have exceeded federal safety limits. Consider testing your tap water independently.
More violations than 79% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
8,724
Population
20
Water Systems
21
Violations (5yr)
16
Health-Based
Location
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Water Systems Serving This Area (20)
Cwsc Salinas
Cal Am Water Company - Monterey
Alco Water Service
Marina Coast Water District
Gonzales, City Of
All resolvedGonzales Schools Ws **Closed**
Gonzales High School
Royal Pk Company
River Rd Ws #25
15 health-basedMisionero Vegetables Ws
Gonzales Potato Co
Secundino Garcia
Garin Company Back Camp
Williams - Rc Farms Ws
1 health-basedGloria Road Water System #1
Grant St #1
River Rd Sporting Clays Ws
Merrill Farms
Henery Hoffman Company
M & M Dairy M
Contaminants Found
At high levels, nitrate can cause blue baby syndrome in infants.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2025
How Does This Compare?
San Jose (93926) has more violations than 79% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 21.
Recommended Water Filters
Based on health-based violations detected in your area, these filter types are commonly used to address similar contaminants. Consult your water utility's Consumer Confidence Report for the most current data.
Reverse Osmosis System
Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.
Targets:Lead, Copper, Arsenic, Mercury, Cadmium
Look for:NSF/ANSI 58 certified
Always look for filters certified by NSF International for the specific contaminants you want to remove. This is general educational information, not an endorsement of any specific product.